It is known to occur in Smooth and Rough Collies, Shetland Sheepdogs, Australian Shepherds, Border Collies, and Nova Scotia Duck Tolling Retrievers.

• 已有报道的患有该疾病的犬种有苏格兰牧羊犬、短毛柯利牧羊犬、喜乐蒂牧羊犬、澳大利亚牧羊犬、边境牧羊犬和斯科舍诱鸭寻回犬。